In this video from the Lustre User Group 2014, John Fragalla from Xyratex presents: Lustre Client Performance Comparison and Tuning (1.8.x to 2.x)
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The dragonfly topology has been proposed as an efficient alternative to the fat tree. This talk presents a study of the blocking and scalability characteristics of the dragonfly, and compares this to the well-known fat tree topology.
Joe Landman and the fine folks at Scalable Informatics have just published a new whitepaper [PDF] comparing the performance of the National Center for Biotechnology Information’s BLAST application on Magny Cours, Istanbul, and Nehalem. According to the Wikipedia In bioinformatics, Basic Local Alignment Search Tool, or BLAST, is an algorithm for comparing primary biological sequence […]
I’ve had several requests for links to benchmark data on the new AMD and Intel processors that have launched over the past couple weeks. We added a little bit of information with our posting of SGI’s SPEC results for its forthcoming UV line running the Xeon 7500s. Yesterday one of AMD’s marketing drones pointed to […]
Melissa Norr at the CRA Policy Blog offers some insight in what both Obama and McCain are paying lip service to in terms of their technology agenda. If you are of a mind that what candidates say during a campaign might bear any resemblance to what they do in office, you can read Melissa’s post […]
“Discover killer-app fundamentals including how to tame dynamic parallelism with a robust-performance parallel stack that allows both host and device side fast memory allocation and transparent data transfer of arbitrarily complex data structures and general C++ classes. A low-wait approach (related to wait-free methods)is used to create a performance robust parallel counter. You definitely want to use this counter for histograms! New results extending machine learning and big data analysis to 13 PF/s average sustained performance using 16,384 GPUs in the ORNL Titan supercomputer will be presented.”
“When OpenACC first appeared it made sense to use this forum to experiment with new approaches while the use of GPUs in HPC was evolving rapidly, with the expectation that the best ideas would then be reintroduced into OpenMP. But OpenMP and OpenACC now seem to be diverging. Indeed, a comparison of OpenACC and OpenMP on the OpenACC web site says “efforts so far to include support for GPUs in the OpenMP specification are — in the opinions of many involved — at best insufficient, and at worst misguided.”